Characterization of TaFe1.25Te3, a new layered telluride with an unusual metal network structure

M. E. Badding, J. Li, F. J. DiSalvo, W. Zhou, P. P. Edwards

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The new layered material, TaFe1+xTe3 (0.25 < x < 0.29), has been synthesized by reaction of the constituent elements. Single-crystal X-ray diffraction studies show that at x = 0.25 the compound crystallizes in the space group P21 m (no. 11) (a = 7.436(1), b = 3.638(1), c = 10.008(1) Å, β = 109.17(1)°). The structure features an unusual TaFe bonded network that contains an equal number of Ta and Fe atoms. The metal network lies between tellurium layers, forming a FeTaTe3 "sandwich." Additionally, x Fe atoms per formula unit partially occupy a square pyramidal site that provides interlayer bonding through the apical tellurium, which is in an adjacent "sandwich." Selected area electron diffraction studies did not reveal any order in the partially occupied Fe positions. Electrical and magnetic measurements reveal that, at x = 0.25, the compound is an antiferromagnetic metal (TN = 200 K) and undergoes a structural phase transition at 1010 K.

Original languageEnglish
Pages (from-to)313-324
Number of pages12
JournalJournal of Solid State Chemistry
Volume100
Issue number2
DOIs
Publication statusPublished - Oct 1992

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Characterization of TaFe<sub>1.25</sub>Te<sub>3</sub>, a new layered telluride with an unusual metal network structure'. Together they form a unique fingerprint.

  • Cite this